C# – UpdatePanel inside Repeater

asp.netcrepeaterupdatepanel

In my UserControl, Im trying to update a updatepanel that is inside a repeater like this:

HTML-Markup

<asp:UpdatePanel ID="updDocumentQuickView" runat="server" UpdateMode="Conditional">
  <ContentTemplate>
    <asp:Repeater ID="repFolders" runat="server" OnItemDataBound="repFolders_OnItemDataBound" OnItemCommand="repFolders_OnItemCommand">
        <ItemTemplate>

            <asp:LinkButton ID="lnkFolder" runat="server"></asp:LinkButton>  

            <asp:UpdatePanel ID="updFiles" runat="server" UpdateMode="Conditional">
                <ContentTemplate>
                    <asp:Repeater ID="repFiles" runat="server" OnItemDataBound="repFiles_OnItemDataBound">
                        <ItemTemplate>
                            <%# Container.DataItem %> 
                        </ItemTemplate>                             
                    </asp:Repeater>   
                </ContentTemplate>                
            </asp:UpdatePanel>
        </ItemTemplate>        
    </asp:Repeater>
  </ContentTemplate>
</asp:UpdatePanel>

C#-code

protected void repFolders_OnItemCommand(object sender, CommandEventArgs e)
{  
    int intRow = -1;

    ScriptManager myScriptManager = (ScriptManager)Page.Master.FindControl("myScriptManager");

    Match myMatch = Regex.Match(myScriptManager.AsyncPostBackSourceElementID, "repFolders.ctl([0-9]*).lnkFolder");

    if (myMatch != null)        
        intRow = Convert.ToInt32(myMatch.Groups[1].Value);

    if (intRow > -1)
    {
        RepeaterItem myItem = repFolders.Items[intRow];

        Repeater repFiles = (Repeater)myItem.FindControl("repFiles");
        UpdatePanel updFiles = (UpdatePanel)myItem.FindControl("updFiles");

        string[] arr1 = new string[] { 
                                    "array item 1", 
                                    "array item 2", 
                                    "array item 3", 
                                    "array item 4", 
                                    "array item 5" };

        repFiles.DataSource = arr1;
        repFiles.DataBind();

        updFiles.Update();
    }
}

The end result I get is that updDocumentQuickView is the UpdatePanel that gets updated, and not updFiles. If i wrap an UpdatePanel around lnkFolder, then that UpdatePanel gets updated, with the same C# code. Ive checked what kind of data that are sent back with fiddler, and the wrong UpdatePanel is sent. Im getting the correct RepeaterItem, and both repFiles and updFiles are found. What do I miss to get the right UpdatePanel to get updated?

UPDATE

Hawxby solution solved the problem with updDocumentQuickView getting updated, thanks for that. But im still having problems with updFiles sending nothing back. Some further testing, with putting literals inside updFiles and working, tells me that theres something with repFiles that isnt returned. repFiles does have data that is bounded.

FINAL SOLUTION

repFiles.Visible were set to false in repFolders_OnItemDataBound, no wonder it didnt show.

Best Answer

It's likely because you have to explicitly set the async bindings

<asp:UpdatePanel ID="updDocumentQuickView" ChildrenAsTriggers="false">
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="repFolders" EventName="repFolders_OnItemCommand" />
    </Triggers>

</asp:UpdatePanel>

Related Solutions

C# – Should ‘using’ directives be inside or outside the namespace

There is actually a (subtle) difference between the two. Imagine you have the following code in File1.cs:

// File1.cs
using System;
namespace Outer.Inner
{
    class Foo
    {
        static void Bar()
        {
            double d = Math.PI;
        }
    }
}

Now imagine that someone adds another file (File2.cs) to the project that looks like this:

// File2.cs
namespace Outer
{
    class Math
    {
    }
}

The compiler searches Outer before looking at those using directives outside the namespace, so it finds Outer.Math instead of System.Math. Unfortunately (or perhaps fortunately?), Outer.Math has no PI member, so File1 is now broken.

This changes if you put the using inside your namespace declaration, as follows:

// File1b.cs
namespace Outer.Inner
{
    using System;
    class Foo
    {
        static void Bar()
        {
            double d = Math.PI;
        }
    }
}

Now the compiler searches System before searching Outer, finds System.Math, and all is well.

Some would argue that Math might be a bad name for a user-defined class, since there's already one in System; the point here is just that there is a difference, and it affects the maintainability of your code.

It's also interesting to note what happens if Foo is in namespace Outer, rather than Outer.Inner. In that case, adding Outer.Math in File2 breaks File1 regardless of where the using goes. This implies that the compiler searches the innermost enclosing namespace before it looks at any using directive.

Sql – Getting data from different tables and databinding same repeater

you have to apply join to both record table and estatype table like the following:

select Es.recid,Es.othercolumn, Es.estatetype, Es.otherColumn from Estatetypes Es,record rec where Es.ID = rec.EstatypeID

now you have one table that contain all the information from estatype and record now bind it to the gridview